/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.bifromq.util;

import org.apache.bifromq.type.Message;
import org.apache.bifromq.type.TopicMessagePack;

public class SizeUtil {
    public static int estSizeOf(TopicMessagePack topicMsgPack) {
        int size = 2; // smallest fixed header size
        int topicLength = topicMsgPack.getTopic().length();
        for (TopicMessagePack.PublisherPack publisherPack : topicMsgPack.getMessageList()) {
            for (Message message : publisherPack.getMessageList()) {
                size += topicLength;
                size += message.getPayload().size();
            }
        }
        return size;
    }
}
